EP 2241137 A1 20101020 - METHOD AND SYSTEM OF WIRELESS DEVICE DISCOVERY IN A WIRELESS NETWORK EMPLOYING DIRECTIONAL ANTENNAS
Title (en)
METHOD AND SYSTEM OF WIRELESS DEVICE DISCOVERY IN A WIRELESS NETWORK EMPLOYING DIRECTIONAL ANTENNAS
Title (de)
VERFAHREN UND SYSTEM ZUR ENTDECKUNG EINER DRAHTLOSEN VORRICHTUNG IN EINEM DRAHTLOSEN NETZWERK MITTELS DIREKTIONALER ANTENNEN
Title (fr)
PROCÉDÉ ET SYSTÈME DE DÉCOUVERTE DE DISPOSITIF SANS FIL DANS UN RÉSEAU SANS FIL UTILISANT DES ANTENNES DIRECTIVES
Publication
Application
Priority
- IB 2008055434 W 20081218
- US 2001608 P 20080109
Abstract (en)
[origin: WO2009087521A1] A wireless device (100) communicates in a wireless network, and executes a wireless device discovery process to discover other wireless devices (100) in the wireless network. In the wireless device discovery process, the wireless device (100) sets its antenna pattern to have an omnidirectional antenna pattern (202), and transmits a first packet (300) using the omnidirectional antenna pattern (202). The first packet (300) comprises a packet preamble sequence (310) formed by repeating each sample of a synchronization sequence N times (N >1). The remainder (320) of the first packet (300) is formed by spreading each sample thereof with a spreading factor P (P> 1). For normal data communications, the wireless device (100) sets the antenna pattern to have a directional antenna pattern (204), and transmits a second packet using the directional antenna pattern (204).
IPC 8 full level
H04W 40/24 (2009.01); H04W 72/04 (2009.01)
CPC (source: EP KR US)
H04B 7/0613 (2013.01 - KR); H04B 7/0617 (2013.01 - KR); H04W 8/005 (2013.01 - EP KR US); H04W 28/04 (2013.01 - KR); H04W 48/16 (2013.01 - KR); H04W 72/04 (2013.01 - KR); H04B 7/0613 (2013.01 - EP US)
Citation (search report)
See references of WO 2009087521A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009087521 A1 20090716; CN 101911780 A 20101208; CN 101911780 B 20140813; EP 2241137 A1 20101020; EP 2241137 B1 20121031; JP 2011509618 A 20110324; JP 5244197 B2 20130724; KR 101449402 B1 20141015; KR 20100103864 A 20100928; US 2010265990 A1 20101021; US 9338632 B2 20160510
DOCDB simple family (application)
IB 2008055434 W 20081218; CN 200880124464 A 20081218; EP 08870534 A 20081218; JP 2010541856 A 20081218; KR 20107017520 A 20081218; US 74656908 A 20081218